Police named the attackers as Youssef Zaghba, a 22-year-old Moroccan-Italian who lived in east London, Khuram Butt, 27, from Barking, and Redouane, who also lived in Barking.

In March 2016, Italian officers stopped Zaghba at Bologna airport and found material related to so-called Islamic State on his mobile phone. He was then stopped from continuing his journey to Istanbul.